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	Comparison of Raman spectral characteristics and quantitative methods between 13CH4 and 12CH4 from 25 to 400 °C and 50 to 400 bar 期刊论文 OAI收割 SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2024, 卷号: 304, 页码: 13 作者: Ge, Yuzhou; Li, Lianfu; Xi, Shichuan; Zhang, Yitong; Luan, Zhendong \| 收藏 \| 浏览/下载：5/0 \| 提交时间：2024/12/20 Raman spectroscopy In situ Quantitative analysis Carbon isotope 13 CH 4 12 CH 4
	Replacement of methane from quartz sand-bearing hydrate with carbon dioxide-in-water emulsion 期刊论文 OAI收割 energy & fuels, 2008, 卷号: 22, 期号: 3, 页码: 1759-1764 作者: Zhou, Xitang; Fan, Shuanshi; Liang, Deqing; Du, Jianwei 收藏 \| 浏览/下载：81/10 \| 提交时间：2010/09/23 The replacement of CH4 from its hydrate in quartz sand with 90:10, 70:30, and 50:50 (W-CO2:W-H2O) carbon dioxide-in-water (C/W) emulsions and liquid CO2 has been performed in a cell with size of empty set 36 x 200 mm. The above emulsions were formed in a new emulsifier, in which the temperature and pressure were 285.2 K and 30 MPa, respectively, and the emulsions were stable for 7-12 h. The results of replacing showed that 13.1-27.1%, 14.1-25.5%, and 14.6-24.3% of CH4 had been displaced from its hydrate with the above emulsions after 24-96 It of replacement, corresponding to about 1.5 times the CH4 replaced with high-pressure liquid CO2. The results also showed that the replacement rate of CH4 with the above emulsions and liquid CO2 decreased from 0.543, 0.587, 0.608, and 0.348 1/h to 0.083, 0.077, 0.069, and 0.063 1/h with the replacement time increased from 24 to 96 h. It has been indicated by this study that the use of CO2 emulsions is advantageous compared to the use of liquid CO2 in replacing CH4 from its hydrate.
	1,2－二酰基－3－（6－脱氧－6－磺酸基－α－D－吡喃型葡萄糖苷基）－sn－甘油脂的制备方法专利 OAI收割专利类型: 发明, 专利号: CN01128229.0, 申请日期: 2003-04-09, 公开日期: 2003-04-09 范晓; 韩丽君; 李宪璀; 娄清香收藏 \| 浏览/下载：36/0 \| 提交时间：2014/08/04 1.一种1 2)二乙基氨基乙基纤维素的预处理与装柱二乙基氨基乙基纤维素经酸碱预处理后 3)1 4)1 (2)按每克粗品50g～100g硅胶的比例 2-二酰基-3-(6-脱氧-6-磺酸基-α-D-吡喃型葡萄糖苷基)-sn-甘油脂的制备方法用甲醇 2-二酰基-3-(6-脱氧-6-磺酸基-α-D-吡喃型葡萄糖苷基)-sn-甘油脂粗品的制备取所述海藻总脂溶于3∶2至1∶1体积比的氯仿-甲醇混合溶剂 2-二酰基-3-(6-脱氧-6-磺酸基-α-D-吡喃型葡萄糖苷基)-sn-甘油脂粗品的纯化(1)将所述1 称取100～200目硅胶其特征在于按如下步骤操作：1)海藻总脂的提取用有机溶剂浸提粉碎的海藻氯仿清洗加到层析柱柱床表面 2-二酰基-3-(6-脱氧-6-磺酸基-α-D-吡喃型葡萄糖苷基)-sn-甘油脂粗品溶于用1∶1体积比配制的氯仿-甲醇中在100～120℃下活化1.5～3小时提取液中加入0.3～1％的氯化钾溶液分层用乙酸处理继续用所述混合溶剂洗脱掉杂质加入0.3～1％KCl溶液冷却后悬浮在冷丙酮中装柱将有机相减压蒸干悬浮在甲醇中装柱再用体积比为12∶8∶(0.5～1.5)的CHCl3∶CH3OH∶NH3·H2O混合溶剂洗脱其最后氯仿-甲醇-水的比例为1∶1∶0.5～1 将所述纯化后得到海藻总脂得到1 离心分层 2-二酰基-3-(6-脱氧-6-磺酸基-α-D-吡喃型葡萄糖苷基)-sn-甘油脂粗品弃掉水相除去乙酸铵